Inputting Equations
4-2 Inputting Equations
This section explains the various ways you can input equations using the Conics Editor window.
Using a Conics Form to Input an Equation
Preset formats can help you input conics equations quickly and easily. The following table contains a complete list of the types of equations that you can input just by tapping [Form] and then [Insert Conics Form].
Conics Forms | Equations |
| Horizontal Parabola 1 |
| x = A ·(y – K)^2 + H |
| Horizontal Parabola 2 |
| x = A ·y^2 + B ·y + C |
| Vertical Parabola 1 |
| y = A ·(x – H)^2 + K |
| Vertical Parabola 2 |
| y = A ·x^2 + B · x + C |
| Circle 1 |
| (x – H)^2 + (y – K)^2 = R^2 |
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| Circle 2 |
| A ·x^2 + A ·y^2 + B ·x + C ·y + D = 0 |
| Ellipse |
| (x – H)^2 ⎟ A^2 + (y – K)^2 ⎟ B^2 = 1 |
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| Horizontal Hyperbola |
| (x – H)^2 ⎟ A^2 – (y – K)^2 ⎟ B^2 = 1 |
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| Vertical Hyperbola |
| (y – K)^2 ⎟ A^2 – (x – H)^2 ⎟ B^2 = 1 |
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| General Form |
| A ·x^2 + B ·x ·y + C ·y^2 + D ·x + E ·y + F = 0 |
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